MCPs encompasses “Infrastructure development projects (IDPs)” such as skyscrapers, mega-shopping complexes, large public transportation projects, power plants, oil and natural gas extraction projects, bridges, tunnels, seaports, large-scale sporting facilities water and dams, power supply and urban development projects. Such projects characterized by strategic importance, dynamic complexity, adaptability and extensive impacts. Such combinations make them inherently vulnerable to crises. As a developing country, Nigeria is facing some fundamental challenges that need attention before it can fully realize its economic potential due to its size, population and resources. This paper examines the socio-economic performances of MCPs in the light of sustainable development with the view to identify and assess such performances from the project professionals’ perspectives’ working in Nigeria’s built environment. The literature reviewed led to the identification of 16nr. SEP impact factors of MCPs; forms the backbone of the questionnaire. These SEP factors and their related impacts brought about by MCPs in Nigeria assessed and the results show they were significant as they aid the sustainable development of the overall country and its citizens socio-economically. These altogether shapes the overall sustainable development of a developing country like Nigeria.

In order to accurately explore the scientific layouts of glass bridges in tourist areas from the perspective of sustainable development, the literacy investigation method is applied and the obtained references are analyzed theoretically. The analysis results have shown that in terms of the scientific layouts of glass bridges, factors including topography and terrain, environmental capacity, tourist landscape perception, functional zoning and streamline design, integration of surrounding environment, tourist flow, styling and characteristic culture, detail design, safety issues, and tourist warnings are the key directions of the scientific layouts of the glass bridges. In summary, the scientific layouts of glass bridges in tourist areas from the perspective of sustainable development need to be considered at a very wide range; each direction is very important for the layouts of glass bridges; the layout design is a complete and complex systematic project. Therefore, the deep comprehension of the scientific layouts of the glass bridges would be referential to subsequent studies of the latecomers.